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Assessment of Data Quality: Errors of Measurement and Errors of Process
Authors:Stephan Arndt  Robert W. Woolson
Abstract:As projects progress from pilot studies with few simple variables and small samples, the research process as a whole becomes qualitatively more complex and subject to an array of contamination by errors and mistakes. Data usually undergo a series of manipulations (e.g., recording, computer entry, transmission) prior to final statistical analysis. The process, then, consists of numerous operations only ending with eventual statistical analysis and write-up. We present a means of estimating the impact of process error in the same terms as psychometric reliability and discuss the implications for reducing the impact of errors on overall data quality.
Keywords:Reliability  Measurement  Data management  Data quality
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